The Grace teaches "On the Subject when to be / Grave or gay, reserv'd or free: / The speaking Air, th' impassion'd Eye, / The living Soul of Symmetry; / And that soft Sympathy that binds / In magic Chains congenial Minds."

"To fix deeply in the mind the principles of science, to settle their limitations, and deduce the long succession of their consequences; to comprehend the whole compass of complicated systems, with all the arguments, objections, and solutions, and to reposite in the intellectual treasury the numb...